import java.util.Scanner;

public class AgeGroup {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.print("请输入你的年龄：");
        int age = scanner.nextInt();  // 假设一个年龄
        if (age < 10) {
            System.out.println("儿童");
        } else if (age < 20) {
            System.out.println("青少年");
        } else if (age < 40) {
            System.out.println("青年人");
        } else if (age < 60) {
            System.out.println("中年人");
        } else {
            System.out.println("老年人");
        }
    }
}